CN203699175U - Substrate slot for scraper conveying equipment and scraper conveying equipment - Google Patents
Substrate slot for scraper conveying equipment and scraper conveying equipment Download PDFInfo
- Publication number
- CN203699175U CN203699175U CN201320793861.0U CN201320793861U CN203699175U CN 203699175 U CN203699175 U CN 203699175U CN 201320793861 U CN201320793861 U CN 201320793861U CN 203699175 U CN203699175 U CN 203699175U
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- CN
- China
- Prior art keywords
- scraper plate
- base seat
- load transfer
- seat groove
- transfer device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000000758 substrate Substances 0.000 title abstract 9
- 239000000463 material Substances 0.000 claims abstract description 49
- 238000010276 construction Methods 0.000 claims description 7
- 210000002421 cell wall Anatomy 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 claims description 3
- 239000003082 abrasive agent Substances 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 6
- 239000003245 coal Substances 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009740 moulding (composite fabrication) Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000003967 crop rotation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The utility model provides a substrate slot for scraper conveying equipment and the scraper conveying equipment using the substrate slot. The substrate slot comprises two side slot walls and a slot bottom connected with the two side slot walls, wherein one or more grooves embedded into the slot bottom are formed in the slot bottom of the substrate slot in a transportation direction, and a material with the antiwear characteristic is inlaid into the groove. The antiwear material inlaid into the grooves is utilized to cause an object moving on the substrate slot to contact with the antiwear material, and accordingly the antiwear characteristic of the substrate slot is improved. A plurality of grooves are formed, so that the contact area of the slot bottom and the object can be reduced, and further the wear of the substrate slot is reduced. Moreover, under the condition with wear, the antiwear material can be directly changed, and the substrate slot does not need to be overally changed, so that the changing cost is effectively reduced.
Description
The application requires to submit on November 04th, 2013 preceence that Patent Office of the People's Republic of China, application number are 201320689765.1, utility model name is called the Chinese patent application of " a kind of material transferring frame and scraper plate load transfer device " to, and its full content is by reference in conjunction with in this application.
Technical field
The utility model relates to the transport sector field of Coal Mines, is specifically related to a kind of base seat groove for scraper plate load transfer device, also relates in addition the scraper plate load transfer device of applying this base seat groove.
Background technology
Slat conveyer is that colliery, chemical mine, metal mine and power plant etc. are used for the important transportation instrument of convey materials.
Described slat conveyer generally can carry coal etc. the material of the loose shape of particle, its principle of work is, bearing piece using unlimited chute as granule materials, scraper plate is fixed on to (composition scraper chain) on chain, as driving component, the continuous transport equipment of carrying bulk material by means of moving flight chain is due to when the convey materials, and flight chain is all embedded among material, therefore be called scrapper conveyor.After head driving section starts, drive the sprocket wheel rotation on head axle, make scraper chain circular flow drive material to move along chute, until to chain-drive section unloading.Scraper chain is walked around the stepless closed cycle operation of chain crop rotation, completes the conveying of material.Generally, scraper conveyor for coal mines adopts steel tank, and opened type is convenient to the coal of coalcutter under adopting and is fallen on slat conveyer.
The scraper plate of traditional slat conveyer is a kind of scratch board layering of mining scraper conveyor, by repeated hardening die-forging forming, and be generally press strip and three bolt one forging formings, so general scraper plate is thick and heavy, no-load power consumption is larger, for 30% left and right of gross horsepower, cause the serious wasting of resources, generally, because thick and heavy scraper plate deadweight accounts for the more than 15% of material in conveying trough, so cause transmission efficiency low, energy consumption is large, the power of motor transmission system is had higher requirements.In addition, the friction force of big and heavy material to delivery chute bottom land, and bottom land also needs to bear the weight of thick and heavy scraper plate, easily there is wear-out failure in delivery chute, and conveying trough changes very inconveniently, changes required cost large.
Utility model content
The utility model provides a kind of base seat groove for scraper plate load transfer device, to solve the problems referred to above of existing base seat groove.
The utility model provides scraper plate load transfer device in addition, to solve the easily problem of wearing and tearing of delivery chute of above-mentioned transmission frame.
A kind of base seat groove for scraper plate load transfer device that the utility model provides, described base seat groove comprises the cell wall of both sides and connects the bottom land of both sides cell wall, the bottom land of described base seat groove, along the groove that at least one is set on transporting direction is embedded in bottom land, is filled the material with antiwear characteristic in this groove.
Preferably, the material of described antiwear characteristic has smooth upper surface.
Optionally, the material of described antiwear characteristic is pottery.
Optionally, the height of the material of described antiwear characteristic is higher than the surface of described bottom land; Or the material of described antiwear characteristic is identical with the height on described bottom land surface.
Optionally, the groove being arranged on bottom land adopts parallel mode setting.
Optionally, described groove is parallel or not parallel or equidistantly or not equidistantly arrange.
In addition, the utility model also provides a kind of scraper plate load transfer device, comprises scraper plate, also comprises the base seat groove for scraper plate load transfer device described in above-mentioned any one technical scheme, and described scraper plate operates in described base seat groove.
Optionally, described scraper plate comprises scraper plate body, and described scraper plate body two ends arrange straight plate structure.
Optionally, described scraper plate comprises scraper plate body and elastic component, and described elastic component is set at least one end of described scraper plate body; Described elastic component has the arcuate structure towards the bending of scraper plate sense of motion.
Optionally, described elastic component is arc thin-wall structure, and its material is elastic material.
Optionally, described scraper plate comprises scraper plate body and elastic structure, at least one end of described scraper plate body, described elastic structure is set; Described elastic structure at least has one and utilizes the behavior of structure of sheet material and/or the elastic construction that mechanical characteristic arranges.
Optionally, described elastic structure has and passes through helicoid geometry; Described pass through helicoid geometry specifically an end of material pieces is returned back to few after one week, the elastic construction forming after passing through in the non-mode that is connected with the body crossover location of this material pieces.
Optionally, the described scraper plate structure that is formed in one; Or described scraper plate is dismantled and assembled structure, is connected to one by attaching parts.
Optionally, the madial wall of the both sides of described base seat groove and a plurality of bulge-structures are set along scraper plate sense of motion, the top of described bulge-structure is less than the length of described scraper plate to the distance of the madial wall of opposite side base seat groove.
Optionally, described bulge-structure is set to arcuate structure towards the position of opposite side base seat groove inwall.
Compared with prior art, the advantage that the utility model wherein has is on the one hand as follows: the utility model provides a kind of base seat groove for scraper plate load transfer device, described base seat groove comprises the cell wall of both sides and connects the bottom land of both sides cell wall, the bottom land of described base seat groove is along the groove that at least one is set on transporting direction is embedded in bottom land, and the material with antiwear characteristic is embedded in described groove.The high-abrasive material that utilization is embedded in the groove of described base seat groove makes this high-abrasive material of object contact moving thereon, thereby strengthen the antiwear characteristic of base seat groove, multiple above-mentioned grooves are set, can reduce the area of contact of bottom land and object, and then reduce the wearing and tearing of base seat groove.
In optimal technical scheme of the present utility model, the packing material in described groove has smooth upper surface, thereby reduces the friction force of relative motion of base seat groove and the scraper plate wherein arranging, and is conducive to save scraper plate and drives energy consumption, and then reduce production costs.
The utility model also provides a kind of scraper plate load transfer device, comprises scraper plate and the above-mentioned base seat groove for scraper plate load transfer device, and described scraper plate operates in described base seat groove.When this scraper plate moves in base seat groove, can directly contact the high-abrasive material in the groove arranging on base seat groove bottom land, reduce the area of contact of scraper plate and described base seat groove, make this base seat groove not easy to wear, meanwhile, in the time of high-abrasive material serious wear, can directly change the high-abrasive material in groove, do not need integral replacing base seat groove, reduce replacement cost.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of base seat groove for scraper plate load transfer device of the utility model;
Fig. 2 is the structural representation of a kind of scraper plate load transfer device of the utility model;
Fig. 3 is the structural representation of a kind of scraper plate of a kind of scraper plate load transfer device of the utility model;
Fig. 4 is the structural representation of the another kind of scraper plate of a kind of scraper plate load transfer device of the utility model.
Wherein, 1, base seat groove, 2, madial wall, 3, bottom land, 4, groove, 5, scraper plate, 6, scraper plate body, 7, elastic component, 8 elastic structures.
Detailed description of the invention
The utility model provides a kind of base seat groove for scraper plate load transfer device.
Fig. 1 is the structural representation of a kind of base seat groove for scraper plate load transfer device of the utility model.
Concrete, described base seat groove 1 is for transmitting material, at least one groove 4 is set on the bottom land 3 of described base seat groove 1, in the present embodiment, being two grooves 4 describes for example, the direction of this groove 4 is identical with transporting direction or close, and this groove 4 is the bottom lands 3 that are embedded in described base seat groove 1, in described groove 4, fill the material with antiwear characteristic.
It should be noted that, described groove 4 can adopt parallel mode setting, and in the time that groove 4 is many, can arrange is equidistant between this groove 4, also can according to actual needs described groove 4 is set to not equidistant.
In addition, generally, this groove 4 is straight trough, but in order to increase the ratio of area and base seat groove 1 bottom land 3 gross areas of groove 4, described groove 4 can be adopted to interleaved mode setting.Adjacent two grooves 4 can have an intersection junction, also can have multiple intersections junction.
Described groove 4 can also be set to not parallel state, but its roughly direction is consistent with transporting direction.
According to the various shapes of above-mentioned groove 4 and and arrangement mode, the material with antiwear characteristic is filled and is embedded in described groove 4, it is pointed out that this antiwear characteristic material generally can select the material with low-friction coefficient smooth surface.
Generally, described antiwear characteristic material selection pottery, described pottery has very strong hardness property, wear-resisting.By described ceramic applications in described groove 4, this ceramic height is general identical with the surface of described base seat groove 1 bottom land 3, be that ceramic plane in groove 4 and described base seat groove 1 bottom land 3 surfaces are smooth state, like this, material disposed thereon or scraper plate 5 contact part with ceramic plane, reduce it and contact with base seat groove 1 the direct of bottom land 3, thereby prevent in the course of the work the wearing and tearing of base seat groove 1.
In addition, in described groove 4, pottery is set, but in long-term work process, this ceramic surface also can wear and tear, and in the time there are wearing and tearing, can only the pottery in described groove 4 be removed and be changed, and integral replacing base seat groove 1 not like this, can reduce the cost of changing workpiece.
Because this pottery is and high-abrasive material, the ceramic height in can described groove 4 is set to different from the height of described base seat groove 1 bottom land 3.Specifically, the height of the upper surface of described pottery is slightly higher than the height of described base seat groove 1 bottom land 3, like this, when material or scraper plate 5 operate in described base seat groove 1, scraper plate 5 can only contact with described pottery, and does not contact with described base seat groove 1 bottom land 3, avoids its contact base seat groove 1 bottom land 3 to cause the wearing and tearing of base seat groove 1, the groove 4 that this kind of mode arranges needs to arrange at least two, makes the operation scraper plate 5 thereon can balance exercise.
It should be noted that, the width of described groove 4 can be set according to the actual requirements, generally can set groove 4 overall widths and account for the 40%-80% of described base seat groove 1 overall width.
The utility model also provides a kind of scraper plate load transfer device, and this scraper plate load transfer device comprises scraper plate 5 and the above-mentioned base seat groove for scraper plate load transfer device, and described scraper plate 5 operates in described base seat groove 1.
Fig. 2 is the structural representation of a kind of scraper plate load transfer device of the utility model.Fig. 3 is the structural representation of a kind of scraper plate of a kind of scraper plate load transfer device of the utility model.Fig. 4 is the structural representation of the another kind of scraper plate of a kind of scraper plate load transfer device of the utility model.
Particularly, described scraper plate 5 can be common scraper plate, and scraper plate 5 body two ends arrange straight plate structure, and this straight plate structure cannot flexural deformation, does not possess elastic deformation.But this scraper plate 5 is used in conjunction with said base groove 1, can prevent equally the wearing and tearing of base seat groove 1 bottom land 3.
In addition, described scraper plate 5 can comprise scraper plate body 6 and elastic component 7 two parts.Described elastic component 7 is set at least one end of described scraper plate body 6; Described elastic component 7 has the arcuate structure towards scraper plate 5 sense of motion bendings.This elastic component 7 can produce elastic strain power, and elastic strain occurs, and while making this scraper plate 5 run into obstacle in operational process, passes through this obstacle, and pushes away material described in bullet and travel forward, and prevents from that scraper plate 5 is in operation jam phenomenon occurs.
Wherein, this elastic strain power is because the existence of elastic component 7 exists, and described elastic component 7 is arc thin-wall structure, and its material is elastic material.On strength of material, arcuate structure has elastic behavior to a certain extent, with respect to flat face, arcwall face has more elastomeric character, specifically, when arcwall face moves along the direction of its raised face, when both sides are in the time running into obstacle, the both sides of arcwall face have the function of contraction and resilience, can pass through smoothly this obstacle.
In addition, it should be noted that, described scraper plate 5 can also be set to have scraper plate body 6 and elastic structure 8 two parts.In at least one end of described scraper plate body 6, described elastic structure 8 is set; Described elastic structure 8 at least has one and utilizes the behavior of structure of sheet material and/or the elastic construction that mechanical characteristic arranges.
Specifically, described elastic structure 8 has and passes through helicoid geometry; Described pass through helicoid geometry specifically an end of material pieces is returned back to few after one week, the elastic construction forming after passing through in the non-mode that is connected with the body crossover location of this material pieces.
Described groundwork of passing through helicoid geometry is to develop according to the characteristic of arcuate structure.Arcuate structure arcwall face has elastic characteristic than flat face, for example, in the time thering is the object process obstacle of arcwall face structure, the curved arc structure that one side of the arcwall face contacting with obstacle can have according to itself occurs bending and deformation, this distortion is further distortion under the curved arc of arcuate structure itself, can there is elastically-deformable characteristic so there is the arcwall face of arcuate structure, and flat face does not possess above-mentioned elastically-deformable characteristic than arcwall face, in the time of flat face process obstacle, can directly be blocked by obstacle, cannot pass through this obstacle, so can there is not above-mentioned deformation yet.
Can there is elastic deformation in the elastic structure 8 of this scraper plate 5, penetrate, thereby prevent that the problem phenomenon of jam from appearring in scraper plate 5 in the time of work, also after avoiding scraper plate 5 to be stuck, pulled by force and fractureed, not only can ensure normally transporting of material, and the normal work of guarantee scraper plate 5 equipment, avoid device damage.
When above-mentioned scraper plate body 6 and elastic component 7 or elastic structure 8 form, about scraper plate body 6 and the connectivity problem of elastic component 7 and the connectivity problem of described scraper plate body 6 and flexible fastening piece, can adopt machining process that scraper plate body 6 and elastic component 7 or elastic structure 8 are forged to integrative-structure, specifically, can be structure as a whole by precision-investment casting.
The load of the scraper plate 5 of above-mentioned integrated formed structure and be stressedly evenly not easy fracture, and also can realize the elastic characteristic that elastic component 7 or elastic structure 8 have.But, generally for convenient disassembly, or in the time that wearing and tearing, elastic component 7 or elastic structure 8 change more easily and convenient, elastic component 7 and scraper plate body 6 can be set to dismantled and assembled structure, or described elastic structure 8 and described scraper plate body 6 are set to dismantled and assembled structure, and are connected to one by attaching parts.Specifically, one end that described elastic component 7 or elastic structure 8 are connected with described scraper plate body 6 has the outstanding structure of part, one end of described scraper plate body 6 has the sunk structure corresponding with giving prominence to structure, the outstanding structure of this elastic component 7 or elastic structure 8 parts can be embedded in the sunk structure of described scraper plate body 6, and the part elastic component 7 after embedding or elastic structure 8 and scraper plate body 6 adopt bolt to fix.The advantage that this demountable structure has is convenient disassembly not only, and the stress producing in the time of the elastic construction generation elastic deformation of elastic component 7 or elastic structure 8 can be transferred to bolt, described bolt can be eliminated this stress, prevents that the junction of described elastic component 7 or elastic structure 8 and described scraper plate body 6 from phenomenon of rupture occurring.
It should be noted that, described in the fitting surface that the is fixedly connected with service direction when being parallel to described scraper plate 5 and working.
In addition, on two madial walls 2 of said base groove 1, multiple bulge-structures are set, this bulge-structure is along scraper plate 5 sense of motion settings, and the top of bulge-structure is less than the length of described scraper plate 5 to the distance of the madial wall 2 of opposite side base seat groove 1, in the time that scraper plate 5 moves in base seat groove 1, can be subject to stopping and limiting of described bulge-structure.Under this barrier effect, will there is elastic deformation in elastic component 7 or the elastic structure 8 of described scraper plate 5, and this elastic component 7 can pass through described bulge-structure.
Particularly, in the time all above-mentioned bulge-structure being set on the madial wall 2 of described base seat groove 1 both sides, this bulge-structure is arcuate structure towards opposite side base seat groove 1 madial wall 2, and described a plurality of bulge-structures are equidistant to be arranged or equidistantly do not arrange.
A kind of scraper plate load transfer device that the utility model provides, comprise scraper plate 5 and the base seat groove for scraper plate load transfer device, described scraper plate 5 operates in described base seat groove 1, on the bottom land 3 of this base seat groove 1, be provided with groove 4, in this groove 4, fill wear-resisting pottery, prevent the wearing and tearing of base seat groove 1 bottom land 3, and can directly change pottery, mustn't change a whole set of base seat groove 1, reduce replacement cost.In addition, this scraper plate 5 can be common scraper plate, can be also the scraper plate 5 with elastic behavior, and the scraper plate 5 with elastic behavior is in operation and can clears the jumps, and prevents that jam phenomenon from appearring in scraper plate 5.
Although the utility model with preferred embodiment openly as above; but it is not for limiting the utility model; any those skilled in the art are not departing from spirit and scope of the present utility model; can make possible variation and amendment, the scope that therefore protection domain of the present utility model should be defined with the utility model claim is as the criterion.
Claims (15)
1. the base seat groove for scraper plate load transfer device, it is characterized in that, described base seat groove comprises both sides cell wall and the bottom land that is connected both sides cell wall, and the bottom land of described base seat groove, along the groove that at least one is set on transporting direction is embedded in bottom land, is filled the material with antiwear characteristic in this groove.
2. the base seat groove for scraper plate load transfer device according to claim 1, is characterized in that, the material of described antiwear characteristic has smooth upper surface.
3. the base seat groove for scraper plate load transfer device according to claim 1, is characterized in that, the material of described antiwear characteristic is pottery.
4. the base seat groove for scraper plate load transfer device according to claim 1, is characterized in that, the height of the material of described antiwear characteristic is higher than the surface of described bottom land; Or the material of described antiwear characteristic is identical with the height on described bottom land surface.
5. the base seat groove for scraper plate load transfer device according to claim 1, is characterized in that, the groove being arranged on bottom land adopts parallel mode setting.
6. the base seat groove for scraper plate load transfer device according to claim 1, is characterized in that, described groove is parallel or not parallel or equidistantly or not equidistantly do not arrange.
7. a scraper plate load transfer device, comprises scraper plate, it is characterized in that, also comprises the base seat groove for scraper plate load transfer device described in claim 1-6 any one, and described scraper plate operates in described base seat groove.
8. scraper plate load transfer device according to claim 7, is characterized in that, described scraper plate comprises scraper plate body, and described scraper plate body two ends arrange straight plate structure.
9. scraper plate load transfer device according to claim 7, is characterized in that, described scraper plate comprises scraper plate body and elastic component, and described elastic component is set at least one end of described scraper plate body; Described elastic component has the arcuate structure towards the bending of scraper plate sense of motion.
10. scraper plate load transfer device according to claim 9, is characterized in that, described elastic component is arc thin-wall structure, and its material is elastic material.
11. scraper plate load transfer devices according to claim 7, is characterized in that, described scraper plate comprises scraper plate body and elastic structure, at least one end of described scraper plate body, described elastic structure are set; Described elastic structure at least has one and utilizes the behavior of structure of sheet material and/or the elastic construction that mechanical characteristic arranges.
12. scraper plate load transfer devices according to claim 11, is characterized in that, described elastic structure has and passes through helicoid geometry; Described pass through helicoid geometry specifically an end of material pieces is returned back to few after one week, the elastic construction forming after passing through in the non-mode that is connected with the body crossover location of this material pieces.
13. according to the scraper plate load transfer device described in claim 7-12 any one, it is characterized in that the described scraper plate structure that is formed in one; Or described scraper plate is dismantled and assembled structure, is connected to one by attaching parts.
14. scraper plate load transfer devices according to claim 7, it is characterized in that, the madial wall of the both sides of described base seat groove and a plurality of bulge-structures are set along scraper plate sense of motion, the top of described bulge-structure is less than the length of described scraper plate to the distance of the madial wall of opposite side base seat groove.
15. scraper plate load transfer devices according to claim 14, is characterized in that, described bulge-structure is set to arcuate structure towards the position of opposite side base seat groove inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320793861.0U CN203699175U (en) | 2013-11-04 | 2013-12-04 | Substrate slot for scraper conveying equipment and scraper conveying equipment |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320689765 | 2013-11-04 | ||
| CN201320689765.1 | 2013-11-04 | ||
| CN201320793861.0U CN203699175U (en) | 2013-11-04 | 2013-12-04 | Substrate slot for scraper conveying equipment and scraper conveying equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203699175U true CN203699175U (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320793861.0U Expired - Lifetime CN203699175U (en) | 2013-11-04 | 2013-12-04 | Substrate slot for scraper conveying equipment and scraper conveying equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203699175U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107600901A (en) * | 2017-09-14 | 2018-01-19 | 湖北天宜机械股份有限公司 | A kind of lignite high temperature pyrolysis semicoke conveying equipment special, carrying method and application |
-
2013
- 2013-12-04 CN CN201320793861.0U patent/CN203699175U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107600901A (en) * | 2017-09-14 | 2018-01-19 | 湖北天宜机械股份有限公司 | A kind of lignite high temperature pyrolysis semicoke conveying equipment special, carrying method and application |
| CN107600901B (en) * | 2017-09-14 | 2023-10-20 | 湖北天宜机械股份有限公司 | Special conveying equipment, conveying method and application for lignite pyrolysis semicoke |
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Granted publication date: 20140709 |
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